The construction of a world, especially a convincing fictional world for literature etc.(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "worldbuilding" in a sentence
"In truth, they're more like a combination of The Chronicles of Riddick and Dune: the worldbuilding is amazing and full of awesome concepts, such as the Adeptus Mechanicus, the Chaos Legions, and the Inquisition."
"While it might well be interesting to examine historical fictions in terms of worldscape and alterity, (do they use worldblocking? if distant enough, do they function as alterior realities?) the term "worldbuilding" is entirely inappropriate where we are simply talking about an effective locale layout."
"M John Harrison's rumination on why "worldbuilding" is a pointless exercise is like a bucket of cold water in the face."